package com.yh.serviceimpl;

import org.springframework.security.access.AccessDecisionManager;
import org.springframework.security.access.AccessDeniedException;
import org.springframework.security.access.ConfigAttribute;
import org.springframework.security.authentication.InsufficientAuthenticationException;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.GrantedAuthority;

import java.util.Collection;
import java.util.GregorianCalendar;
import java.util.Iterator;

public class MyAccessDecisionManager<configAttributes> implements AccessDecisionManager {
    @Override
    public void decide(Authentication authentication, Object object, Collection<ConfigAttribute> configAttributes) throws AccessDeniedException, InsufficientAuthenticationException {
        if (null== configAttributes || configAttributes.size() <=0){
            return;
        }
        configAttributes c;
        String needRole;
        for (Iterator<ConfigAttribute> iter=configAttributes.iterator();iter.hasNext();){
            c= (configAttributes) iter.next();
            needRole= ((ConfigAttribute) c).getAttribute();
            for (GrantedAuthority ga :authentication.getAuthorities()){
                if(needRole.trim().equals(ga.getAuthority())){
                    return;
                }
            }
        }
        throw new AccessDeniedException("权限不足");
    }

    @Override
    public boolean supports(ConfigAttribute attribute) {
        return true;
    }

    @Override
    public boolean supports(Class<?> clazz) {
        return true;
    }
}
